The ornamental design for a combinationunit, substantially as shown and described.
FIG. 1 is a front, raised perspective view of a combination unit including both a towel dispenser and a waste receptacle according to the invention;
FIG. 2 is a front view of the combination unit of FIG. 1;
FIG. 3 is a rear view of the combination unit of FIG. 1;
FIG. 4 is a right side view of the combination unit of FIG. 1;
FIG. 5 is a left side view of the combination unit of FIG. 1;
FIG. 6 is a top view of the combination unit of FIG. 1;
FIG. 7 is a bottom view of the combination unit of FIG. 1; and,
FIG. 8 is a front, lowered perspective view of the combination unit of FIG. 1.
The broken lines shown in the drawings form no part of the claimed design. All surfaces not shown form no part of the claimed design. Further, the combination unit is shown with symbolic breaks in its width. The appearance of any portion of the combination unit between the break lines forms no part of the claimed design.